Adjustable mill nut



Nov. 10, 1931.

E. BLASBERG ADJUSTABLE MILL NUT Filed May 7, 1931 swam tow flmwwPatented Nov. 10, 1931 PATENT OFFICE ERNEST BLASBERG, F HERNDON,PENNSYLVANIA ADJUSTABLE MILL NUT Application filed May 7, 1931.- SerialNo. 535,793.

This invention relates to an adjustable threadless mill nut, to be usedfor spinning or throwing machines, in connection with a spindle and abobbin, and adapted to hold a fiyer at any desired level on the spindleabove the bobbin. 1

The purpose of the invention is to provide a means for adjusting the nutto the changing position which the bobbin takes on the 0 spindle, due towear, and also to provide a nut to fit spindles which vary slightly indiameter.

As at present constructed and used, the

keeper is made of one solid piece of wood with :5 a hole through thecenter, which is usually placed on top of the spindle to prevent theflyer from working upward and breaking the thread. It is often foundnecessary to have the bore in this keeper enlarged or made smaller, tofit different sized spindles, and this must be done by the user. Anotherdisadvantage of the device now in use is that when the bobbin afterusage moves downward on the spindle, there is too much upward play ofthe flyer, causing frequent breakage of the thread. My invention isdesigned to overcome these faults.

In the accompanying drawings:

Figure 1 is a perspective view of a spindle, on which are shown abobbin, a flyer and an adjustable nut.

Figure 2 is a top plan view of the adjust able nut, showing theretaining spring in the bore. as Figure 3 is a view of the nut with theupper half removed to show the spring and the means for securing thespring to the nut. Figure 4 is a perspective View of the nut. Referringto the drawings, a indicates a :0 spindle socket of a spinning orthrowing machine, is a spindle secured therein, 0 is a bobbin placed onthe spindle, d is a flyer on the spindle adjacent to the top of thebobbin and prevented from changin its level by the adjustable nut ewhich may be held securely in all positions. 1 V

The adjustable nut 6 has an axial bore 7 and a narrow and relativelydeep groove 9 extending from its periphery inward close to the bore f,the wall between said groove and bore being cut away at one side of theaxis of the bore. h indicates a resilient. spring, which is of wire inthe present construction, inserted in the groove g. The center of thecurved portion, marked 2', of said spring extends slightly into thebore. The looped members j of the spring pass around the anchor pins inwhich are slightly out of diameter of the nut. The free ends Z of thespring lie within the groove.

The manner in which the "nut operates is as follows:

When the nut is placed on the top of the spindle, it is automaticallyadjusted to fit the spindle, by means of the resilient spring in thebore. The nut will stay tight on the upper end of the spindle but it caneasily be pushed down on it if thelow position of a different bobbin onthe same spindle necessitates it, the wire being simply pushed into thegroove. When the curved portion of the spring is forced back into thegroove, the free ends extend outwardly. Lifting the nut to the upper endof the spindle will cause the wiredue to its elasticity-to go back toits original position.

Having described my invention, what I claim as new and desire to secureby Letters Patent is:

A threadless nut comprising a body having an axial bore to receive aspindle and having a narrow relatively 'deep groove extending from itsperiphery inward close to I said bore, the wall between said groove andbore being cut away at one side of the axis of the bore, anchoring pinsin said body extending across the groove'at opposite sides of the boreand a resilient wire extending through the cut-away part of said walland looped around the anchoring pins, the free ends of the wire lyingwithin the groove.

In testimony whereof I hereunto afiix my signature.

ERNEST BLASBERG.

